/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
Batching client->server RPCs This is a WIP feature to batch up client->server communication. It is opt in and not complete. It only batches the below functions. Other Server RPCs are not safe to call during a batch window. Only opt in if you know what you are doing!
void CallServerTryActivateAbility ( [FGameplayAbilitySpecHandle](API\Plugins\GameplayAbilities\FGameplayAbilitySpecHandle) AbilityToActivate, bool InputPressed, [FPredictionKey](API\Plugins\GameplayAbilities\FPredictionKey) PredictionKey )